We have looked at electric motor controllers and they are
expensive and are very hard to use in a regenerative braking
fashion.

You should consider going the AIR-CAR route where our Manta
electric motor is simply operating an air compressor which fills
up a 17 gallon carbon fiber air tank to about 100 PSI (900 PSI
rated tank) and then automatically turns off. (In full speed
time driving conditions it will never turn off of coarse)

Then speed control is just a simple matter of partially opening
an air valve which is dirt cheap and very adaptable to all kinds
of vehicles. The air motor is just a rotary vane compressor that
can turn air pressure into forward motion AND forward motion
back into air pressure (regenerative braking)

The great thing about AIR-CARS is that the regenerative braking
mode simply fills the reserve tank back up with more air.
Hard braking will require a 3000 PSI rated air hose for those
"emergency stops" On brake release all that super high
pressure air in the high pressure brake line simply shoots back
into the 17 gallon reserve tank since it is really only a small
volume of air. No more brake pads to repair and ABS can be accomplished
with a computer and simple solenoid pop -off valves. Everything
about the ELECTRIC/ AIR POWERED
vehicle is a natural!!

For climate control the ELECTRIC/
AIR POWERED car also has superior advantages.

When air is compressed it gets boiling hot
and when released it gets freezing cold.

This fact is the basis of a climate control
system that requires NO additional power.

Again, The ELECTRIC/
AIR POWERED car is a natural!

"The ELECTRIC/
AIR POWERED car is the B.A.T. (Best Available Technology)"

Our ELECTRIC / AIR-CAR theory
is different to all others since we only use a relatively tiny
air

tank and then use battery
power to make instant air pressure in small amounts.

The advantage is that
controlling air is much cheaper then controlling electricity!!

Simple air valves are
MUCH cheaper than IGBT's and all other fancy electronics.

Large air tanks also
means big explosions even if they are made out of carbon fiber.

Pressurizing the air
as you drive has many advantages so it is much more practical.